Instructions Given in the Drawing School Established by the Dublin Society: Course of mathematicks. System of the physical world. System of the moral world. Plan of the military art. Plan of the marcantile arts. Plan of naval art. Plan of mechanic arts. The elements of EuclidA. M'Culloch, 1769 |
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Página xxxviii
... half , and after 13 Days and half to re - appear in the Western Verge of his Disk , from whence he in- fers that the Sun revolves round its Axis in the Space of about 27 Days from Weft to Eaft , that is in the fame Direction of the ...
... half , and after 13 Days and half to re - appear in the Western Verge of his Disk , from whence he in- fers that the Sun revolves round its Axis in the Space of about 27 Days from Weft to Eaft , that is in the fame Direction of the ...
Página xliv
... half the least . It will be explained in the Sequel how Newton discovered the Cause of all thofe Inequalities of the Moon . The only uniform Motion that the Moon has , is its Motion of Rotation about her Axis ; this Motion is performed ...
... half the least . It will be explained in the Sequel how Newton discovered the Cause of all thofe Inequalities of the Moon . The only uniform Motion that the Moon has , is its Motion of Rotation about her Axis ; this Motion is performed ...
Página xlvi
... Half of the periodic Time of the the center Revolution round the Sun of a Body placed at Half their prefent Distances , and confequently thefe Times would be to their periodic Times , as I to 4√2 . Thus , Venus for Example would take ...
... Half of the periodic Time of the the center Revolution round the Sun of a Body placed at Half their prefent Distances , and confequently thefe Times would be to their periodic Times , as I to 4√2 . Thus , Venus for Example would take ...
Página lxxiv
... half the annual Motion [ P. ] of the Equi- noctial Points of the Body compofed of the Ring and Globe to which it ad- ( a ) The ratio of the motion of the ring to the motion of the interior globe affigned by Newton , is 4590 to 485223 ...
... half the annual Motion [ P. ] of the Equi- noctial Points of the Body compofed of the Ring and Globe to which it ad- ( a ) The ratio of the motion of the ring to the motion of the interior globe affigned by Newton , is 4590 to 485223 ...
Página lxxxv
... and 71 Degrees : thofe Distances will be 69,098747 and 69,897345 and the mean Distance will be 69 as equal to half the Sum = aabb aa sscc cumstances . of the moon of the the longest and shortest femidiameters PHYSICAL WORLD . LXXXV .
... and 71 Degrees : thofe Distances will be 69,098747 and 69,897345 and the mean Distance will be 69 as equal to half the Sum = aabb aa sscc cumstances . of the moon of the the longest and shortest femidiameters PHYSICAL WORLD . LXXXV .
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Términos y frases comunes
ABCD alfo alſo arch bafe baſe becauſe Bodies Cafe caufe centrifugal Force circle Cofine Comet cone Confequently cylinder defcribed demonftrated Diameter diſcovered Diſtance draw the ftraight Earth ECAUSE Ecliptic equal Equator equiangular equimultiples fame altitude fame manner fame multiple fame plane fame ratio fecond fegment fhall fhewing fhould fide AC fimilar fince firft firſt folid fome Force fquare ftraight lines AC fuch fuppofed Gravity greateſt heliocentric Hypothefis impoffible interfect Jupiter lefs Likewife line A B magnitude Meaſure Moon moſt Motion Newton Nodes Number Obfervations oppofite Orbit pafs thro parallelepiped Perihelion plle Prep prifm proportional PROPOSITION pyramid Rays rectilineal figure Revolution Rgle right angles Saturn ſphere Syfigies Syftem Tangent thefe Thefis THEOREM theſe thofe thoſe Tides tion triangle true Anomaly Vafe Wherefore whofe
Pasajes populares
Página 4 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Página 164 - When of the equimultiples of four magnitudes (taken as in the fifth definition), the multiple of the first is greater than that of the second, but the multiple of the third is not greater than the multiple of the fourth; then the first is said to have to the second a greater ratio than the third magnitude has to the fourth : and, on the contrary, the third is said to have to the fourth a less ratio than the first has to the second. VIII. 'Analogy, or proportion, is the similitude of ratios.
Página 165 - When four magnitudes are continual proportionals, the first is said to have to the fourth the triplicate ratio of that which it has to the second, and so on, quadruplicate, &c., increasing the denomination still by unity, in any number of proportionals.
Página 8 - Let it be granted that a straight line may be drawn from any one point to any other point.
Página xxviii - This depends upon three suppositions: — first, that all celestial bodies whatsoever have an attraction or gravitating power towards their own centres, whereby they attract not only their own parts and keep them from flying from them, as we may observe the earth to do, but that they do also attract all the other celestial bodies that are within the sphere of their activity...
Página 164 - VII. When of the equimultiples of four magnitudes (taken as in the fifth definition), the multiple of the first is greater than that of the second, but the multiple of the third is not greater than the multiple of the fourth ; then the first is said to have to the second a greater ratio than the third magnitude has to the fourth : and, on the contrary, the third is...
Página 29 - Therefore if two straight lines, &c. QED COR. 1. From this it is manifest, that, if two straight lines cut one another, the angles they make at the point where they cut, are together equal to four right angles.
Página 29 - Cor. 2. And consequently that all the angles made by any number of lines meeting in one point, are together equal to four right angles.
Página xxviii - Saturn also, by their attractive powers, have a considerable influence upon its motion, as in the same manner the corresponding attractive power of the earth hath a considerable influence upon every one of their motions also.
Página xxviii - The third supposition is that these attractive powers are so much the more powerful in operating, by how much the nearer the body wrought upon is to their own centers. Now what these several degrees are I have not yet experimentally verified...